105342642457 has 16 divisors (see below), whose sum is σ = 119708848000. Its totient is φ = 91896177024.

The previous prime is 105342642407. The next prime is 105342642497. The reversal of 105342642457 is 754246243501.

It is a de Polignac number, because none of the positive numbers 2^k-105342642457 is a prime.

It is a super-2 number, since 2×105342642457² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105342642407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420357 + ... + 622402.

It is an arithmetic number, because the mean of its divisors is an integer number (7481803000).

Almost surely, 2^105342642457 is an apocalyptic number.

It is an amenable number.

105342642457 is a deficient number, since it is larger than the sum of its proper divisors (14366205543).

105342642457 is a wasteful number, since it uses less digits than its factorization.

105342642457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043200.

The product of its (nonzero) digits is 806400, while the sum is 43.

Adding to 105342642457 its reverse (754246243501), we get a palindrome (859588885958).

The spelling of 105342642457 in words is "one hundred five billion, three hundred forty-two million, six hundred forty-two thousand, four hundred fifty-seven".